Published August 2, 2026 · Educational information — not legal, tax, lending, or financial advice.
Quick answer
A credit bureau dispute letter goes to Equifax, Experian, or TransUnion and asks that company to investigate specific information you believe is inaccurate or incomplete. The bureau generally must investigate within 30 days — up to 45 in some circumstances — forward your dispute and evidence to the company that supplied the information, and send you written results within five business days of finishing. Dispute with every bureau that shows the error; they do not share disputes automatically. What this letter cannot do is remove information that is accurate. If the entry is true, a dispute is the wrong tool.